mirror of
https://github.com/mattermost/mattermost.git
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847c181ec9
* allow `Wait()`ing on the supervisor In the event the plugin supervisor shuts down a plugin for crashing too many times, the new `Wait()` interface allows the `ActivatePlugin` to accept a callback function to trigger when `supervisor.Wait()` returns. If the supervisor shuts down normally, this callback is invoked with a nil error, otherwise any error reported by the supervisor is passed along. * improve plugin activation/deactivation logic Avoid triggering activation of previously failed-to-start plugins just becase something in the configuration changed. Now, intelligently compare the global enable bit as well as the each individual plugin's enabled bit. * expose store to manipulate PluginStatuses * expose API to fetch plugin statuses * keep track of whether or not plugin sandboxing is supported * transition plugin statuses * restore error on plugin activation if already active * don't initialize test plugins until successfully loaded * emit websocket events when plugin statuses change * skip pruning if already initialized * MM-8622: maintain plugin statuses in memory Switch away from persisting plugin statuses to the database, and maintain in memory instead. This will be followed by a cluster interface to query the in-memory status of plugin statuses from all cluster nodes. At the same time, rename `cluster_discovery_id` on the `PluginStatus` model object to `cluster_id`. * MM-8622: aggregate plugin statuses across cluster * fetch cluster plugin statuses when emitting websocket notification * address unit test fixes after rebasing * relax (poor) racey unit test re: supervisor.Wait() * make store-mocks
96 lines
2.7 KiB
Go
96 lines
2.7 KiB
Go
// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
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// See License.txt for license information.
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package app
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import (
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"fmt"
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"time"
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"github.com/mattermost/mattermost-server/mlog"
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"github.com/mattermost/mattermost-server/model"
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)
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const (
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DISCOVERY_SERVICE_WRITE_PING = 60 * time.Second
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)
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type ClusterDiscoveryService struct {
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model.ClusterDiscovery
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app *App
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stop chan bool
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}
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func (a *App) NewClusterDiscoveryService() *ClusterDiscoveryService {
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ds := &ClusterDiscoveryService{
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ClusterDiscovery: model.ClusterDiscovery{},
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app: a,
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stop: make(chan bool),
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}
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return ds
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}
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func (me *ClusterDiscoveryService) Start() {
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<-me.app.Srv.Store.ClusterDiscovery().Cleanup()
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if cresult := <-me.app.Srv.Store.ClusterDiscovery().Exists(&me.ClusterDiscovery); cresult.Err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to check if row exists for %v with err=%v", me.ClusterDiscovery.ToJson(), cresult.Err))
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} else {
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if cresult.Data.(bool) {
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if u := <-me.app.Srv.Store.ClusterDiscovery().Delete(&me.ClusterDiscovery); u.Err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to start clean for %v with err=%v", me.ClusterDiscovery.ToJson(), u.Err))
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}
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}
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}
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if result := <-me.app.Srv.Store.ClusterDiscovery().Save(&me.ClusterDiscovery); result.Err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to save for %v with err=%v", me.ClusterDiscovery.ToJson(), result.Err))
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return
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}
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go func() {
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mlog.Debug(fmt.Sprintf("ClusterDiscoveryService ping writer started for %v", me.ClusterDiscovery.ToJson()))
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ticker := time.NewTicker(DISCOVERY_SERVICE_WRITE_PING)
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defer func() {
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ticker.Stop()
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if u := <-me.app.Srv.Store.ClusterDiscovery().Delete(&me.ClusterDiscovery); u.Err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to cleanup for %v with err=%v", me.ClusterDiscovery.ToJson(), u.Err))
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}
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mlog.Debug(fmt.Sprintf("ClusterDiscoveryService ping writer stopped for %v", me.ClusterDiscovery.ToJson()))
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}()
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for {
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select {
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case <-ticker.C:
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if u := <-me.app.Srv.Store.ClusterDiscovery().SetLastPingAt(&me.ClusterDiscovery); u.Err != nil {
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mlog.Error(fmt.Sprintf("ClusterDiscoveryService failed to write ping for %v with err=%v", me.ClusterDiscovery.ToJson(), u.Err))
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}
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case <-me.stop:
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return
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}
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}
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}()
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}
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func (me *ClusterDiscoveryService) Stop() {
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me.stop <- true
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}
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func (a *App) IsLeader() bool {
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if a.License() != nil && *a.Config().ClusterSettings.Enable && a.Cluster != nil {
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return a.Cluster.IsLeader()
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} else {
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return true
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}
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}
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func (a *App) GetClusterId() string {
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if a.Cluster == nil {
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return ""
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}
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return a.Cluster.GetClusterId()
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}
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